The Nationwide Personal Transportation Study (NPTS) was
designed to collect information on all trips taken during a designated
24-hour period and some additional detail on trips of 75 miles or more
during the preceding 14-day period. Data were also gathered on the
availability and use of public transportation, types of motorized
vehicles available to the household, and characteristics of the trips
taken including mode, purpose, miles traveled, time required, and
persons on the trip. Also provided is information about trips taken by
pers... (more info)

The Nationwide Personal Transportation Study (NPTS) was
designed to collect information on all trips taken during a designated
24-hour period and some additional detail on trips of 75 miles or more
during the preceding 14-day period. Data were also gathered on the
availability and use of public transportation, types of motorized
vehicles available to the household, and characteristics of the trips
taken including mode, purpose, miles traveled, time required, and
persons on the trip. Also provided is information about trips taken by
persons who commute to and/or from their job. There are 32 files,
covering the following eight areas for each year quarter: Household
Characteristics (Parts 1, 9, 17, and 25), Household Member
Characteristics (Parts 2, 10, 18, and 26), Household Vehicle
Information (Parts 3, 11, 19, and 27), Occupation and Travel-to-Work
Data (Parts 4, 12, 20, and 28), Travel Day Trip Data (Parts 5, 13, 21,
and 29), Fourteen-Day Travel Period Trips (Parts 6, 14, 22, and 30),
Stop Data for Fourteen-Day Travel Period Trips (Parts 7, 15, 23, and
31), and Annual Long-Trip Data (Parts 8, 16, 24, and 32) compiled from
the National Household Travel Survey for the 13,365 households common
to both studies. Demographic information in the Household Member
Characteristics files includes age, sex, race, marital status,
household relationship, and educational attainment.

(1) Each household, person, and trip reported in these
files was assigned a weight. Weighting instructions are provided in
pages 34-50 of the machine-readable documentation.

Methodology

Sample:
A stratified multistage cluster sample was used to select
24,466 households, 3,084 of which were not interviewed. All households
included in the sample had previously been interviewed for the Current
Population Survey.

Data Source:

personal interviews and the National Household Travel
Survey conducted by United States Department of Transportation, Bureau
of Transportation Statistics

Version(s)

Original ICPSR Release:1984-05-11

Version History:

2006-01-12 All files were removed from dataset 33
and flagged as study-level files, so that they will accompany all
downloads.